import java.util.Scanner;

public class Test2 {
    public static void toLowerCase(String s) {
        s=s.toLowerCase();
        System.out.println(s);
    }
    public static void main(String[] args) {//https://leetcode.cn/problems/to-lower-case/
        Scanner scanner=new Scanner(System.in);
        while(scanner.hasNextLine()){
            String r=scanner.nextLine();
            toLowerCase(r);
        }
    }
}
